JPH04136970U - Easy detachable connector for tractor - Google Patents

Abstract

(57) [Summary] [Purpose] To save the trouble of connecting and disconnecting the connector by enabling the harness connector to be automatically attached and detached at the same time as the work equipment is attached and detached in a tractor with an auto-hitch mechanism that electronically controls the work equipment installed at the rear. There is also something to prevent forgetting to attach or remove a connector. [Structure] A link 23 having a contact terminal 23a is provided on the upper part of the auto hitch H so as to be interlocked with the lever 3, and a contact terminal 25 is screwed onto the upper arm 21 on the working machine side. Alternatively, a tractor side harness connector 26 is provided on the upper hook 2' of the auto hitch H, and a work machine side harness connector 27 is provided on the upper coupling member 21a of the upper arm 21 on the work machine side. Or auto hitch H
A tractor side coupler 28 is installed near the lower hook 9 of the work equipment, and a work equipment side coupler 29 is installed near the lower coupling member 22a of the work equipment.
It is intended to provide

Description

[Detailed explanation of the idea]

0001

[Main industrial application fields]

This invention uses an auto-hitch mechanism for tractors that electronically control the work equipment. Technique for automatically attaching and detaching the harness connector at the same time as attaching and detaching the work equipment Regarding the technique.

0002

[Conventional technology]

Traditionally, tractors have an auto hitch mechanism that automatically attaches and detaches the work equipment. The technology was considered publicly known.

0003

[Problem that the idea aims to solve]

However, in the conventional technology, the hardware installed to electronically control the work machine is Ness connectors have to be attached and detached manually by the operator, and if you forget to attach them, This caused problems such as people forgetting to remove the harness and cutting the harness. This invention is based on The connector is configured so that it can be automatically attached and detached at the same time as the auto hitch is attached and detached. This is an attempt to solve the above problems.

0004

[Means to solve the problem]

This invention uses the following means to solve the above problems. It is. This is a tractor that electronically controls the work equipment connected to the rear, and has an inverted U-shaped hitch. This type has hooks attached at three points: the center of the upper end of the frame 1, and the lower left and right ends. For those equipped with auto hitch H, upper hook 2 of said auto hitch H Attach a link 23 provided with a contact terminal 23a, which is a harness connector, to the The link 23 is connected to the lever 5 by the rod 24, while the upper part of the working machine is The contact terminal 25 is screwed onto the arm 21, and both contact terminals 23a and 25 can be connected. It is configured in a way that allows

[0005] Alternatively, connect the tractor-side harness connector 26 to the upper part of the auto hitch H. At the same time, the work equipment side harness connector 27 is fixed between the hooks 2'. Provided at the center of the upper connecting member 21a between the upper arm 21 on the machine side and the tractor side. It is something that

[0006] Or, place the truck near the lower hook 9 of the lower link guide 4 of the auto hitch H. Fix the data side coupler 28 and connect the lower link bracket 22 on the work machine side. A work machine side coupler 29, which is a harness connector, is fixed near the member 22a. , the fixing direction of both couplers is set at the connection point between the upper hook 2 and the upper connection member 22a. It is configured to match the tangential direction of a circle centered on U.

[0007]

[Effect]

Next, the operation of the present invention will be explained. By configuring as claimed in claim 1 , the link 2 and the rod 24 are interlocked with the lever 5 and the lower hook 9. Turn on the work equipment When attaching to the car hitch H, raise the lever 5 to the A' position in Figure 3, and then Connect the upper connecting member 21a and lower connecting member 22a on the machine side to each hook of the auto hitch H. When the lever 5 is lowered to the A position, the lower hook 9 is moved to the B position. As the rod 24 rises, the contact end of the link 23 The child 23a is connected to the working machine side contact terminal 25, and thereby the harness connection is completed. When detaching the work equipment, lower the auto hitch H and press lever 5. When the rod 24 is raised to position A, the rod 24 is lowered and the contact terminal 23 of the link 23 is a rises and comes off from the contact terminal 25.

[0008] Moreover, by configuring as claimed in claim 2, when installing a working machine on a tractor, While lifting the work equipment using the hitch H, the tractor side harness connector 2 6 is connected to the harness connector 27 on the work machine side, and when the work machine is detached, the auto-hike While lowering the switch H, the tractor-side harness connector 26 is connected to the work machine side. It comes off from the harness connector 27.

[0009] Moreover, by configuring as claimed in claim 3, when the work machine is attached to the tractor, When hooking the work equipment with the auto hitch H, the tractor side coupler 28 and the work machine side coupler 29 are connected, and when lifting the work machine, the coupling of both couplers is The joining direction is a circle whose center is the joining point U between the upper hook 2 and the upper joining member 21a. By matching the tangential direction, both couplers are fixed, and when the work equipment is removed, In this case, both couplers come off due to the opposite effect described above.

0010

【Example】

Next, the configuration of the embodiment of the present invention shown in the accompanying drawings will be described. Figure 1 shows the truck Figure 2 is a side view of the rotary tiller R, which is a working machine, attached to the rear of the Ta-T. , the rotary tiller R according to the embodiment of claim 1, which is attached to the rear of the tractor T. FIG. 3 is a front elevational view of the hitch frame 1 according to an embodiment of claim 1. 4 is a side view of the lever 5, and FIG. 6 is a side view of the hitch frame 1 according to the embodiment of claim 1. FIG. How to attach work equipment using auto hitch H according to Figures 1 to 6 Explain the law.

[0011] The rear of the tractor T has a universal joint 20 in the center and a top at the top. A three-point link type work equipment mounting device is constructed with link 18 and lower links 19 on the left and right sides. The hitch frame 1 that constitutes the auto hitch H is attached to the rear of the hitch frame. There is.

0012 The hitch frame 1 has an inverted U-shape as shown in FIGS. 3, 4, and 6, and the top The link 18 is attached to the top link guide 3, and the lower link 19 is attached to the lower link guide 4. are each pivotally fixed to lower link pins 14 provided on the inside of the tractor T. The universal joint 20 that transmits power is screwed to the PTO shaft 16. This allows the hitch frame 1 to connect to the top link 18, lower link 19 and universal link. - It is attached to the rear part of the monkey joint 20.

[0013] In the hitch frame 1, at the rear of the top link guide 3, there is a An upper hook 2 is provided to connect with a connecting member 21a attached to the par arm 21. ing. On the outside of the left and right lower link guides 4, there is a lever lip that is pivotally fixed to the connecting rod 6. One end of a lower hook rod 8 is pivotally fixed to a lower hook pin 10 via a link 7. In addition, the lower hook 9 is integrated with the lower hook rod 8, and the lower hook 9 is integrated with the lower hook rod 8. is pivotally fixed to a lock pin 10.

[0014] The lower hook pin 10 is connected to the lower link guide 4 and the lower hook rod bracket. and the lower hook rod 8 and the lower hook 9. It is rotatable. Between the lower hook rod 8 and the lower link guide 4 A spring 11 is interposed. One lever link 7 is provided with a lever 5. It rotates between positions A and A', and also due to the action of spring 11 and the rod block for the lower hook. By pressing against the racket 12 and stopper 13, the racket can be moved to position A or position A'. At the same time, the lower hook 9 is also fixed at position B or position B'.

[0015] In addition, in the PTO shaft frame 15 installed at the bottom of the hitch frame 1, As mentioned above, the PTO shaft 16 is installed on the tractor side in the center, and the automatic An engagement clutch 17 is arranged. The automatic engagement clutch 17 is attached to a base attached to a work machine. It is also fixed at the tip of the input shaft of the bell gear box, and as described later, when the work machine is attached. Both automatic engagement clutches 17 are engaged to enable power transmission.

[0016] To attach the work machine, first attach the upper coupling member 21a attached to the upper arm 21 of the work machine. is inserted into the groove U of the upper hook 2. When the hitch frame 1 is raised , the work machine is lifted up using the upper coupling member 21a as a fulcrum, and the lower link The lower connecting member 22a provided at the tip of the link bracket 22 is connected to the tip of the lower link guide 4. It is inserted into the groove D at the end. At this time, if the lever 5 is pushed down to the state shown in Figure 3A, , the lower hook 9 lowers the lower connecting member 22a at position B by the return action of the spring. Fix it from the side. In this way, the work machine is attached using the three hooks, and at the same time, By engaging the automatic engagement clutch 17 attached to the hitch frame 1, the tractor T and the work machine are connected. The power transmission shaft is also automatically connected. In the above manner, connect to tractor T. This completes the work equipment installation.

[0017] In addition, when removing the work equipment, move the lever 5 to the position A' in Figures 3 and 4 and attach the lower foot. When hitch frame 1 is lowered by lowering hitch frame 9 to position B', the upper foot will naturally move. Upper connecting member 21a and lower connecting member 22 on the work machine side than hook 2 and lower hook 9 When a is disengaged and the tractor T is moved forward, the automatic engagement clutch 17 automatically engages the work machine side. The automatic engagement clutch 17 is disengaged.

[0018] Next, the harness connector according to claim 1 will be explained with reference to FIGS. 3 to 6. do. FIG. 6 shows the harness connector according to claim 1 in the auto hitch H and upper FIG. 3 is a perspective view of the arm 21 being attached. Auto hitch H top link guy Connect the connector pivot pin 3a attached to the door 3 to the link that is the connector for the harness on the tractor side. 23, and the link 23 is rotatably mounted. The link 2 The tractor side end of 3 is connected to the connecting rod 6 via the rod 24, thereby The link 23 is interlocked with the lever 5. The work machine side of the link 23 is a contact end. The child 23a is the child 23a.

[0019] On the other hand, the upper frame 21 of the work machine has a contact point on the outside of the coupling member 21a. Screw the terminal 25, set the lever 5 to position A, and connect the coupling member 21a to the auto hitch H. When the contact terminal 23a of the link 23 is inserted into the U part of the upper hook 2 of the It is configured to be joined to the contact terminal 25. By configuring like this, the When the work equipment is attached to the tractor hitch H, both contact terminals are automatically connected and attached to the tractor side. The harness on the work equipment side is connected, and when removing the work equipment, move the lever 5 to position A'. When the link 23 is raised to It is out of 25.

[0020] Next, a harness connector according to claim 2 will be explained with reference to FIG. figure 7 is a harness connector according to claim 2, which is attached to an autohitch H and an upper arm 2. FIG. Uploading the auto hitch H configured as shown in Figure 7 A tractor-side harness connector 26 is fixedly installed between the par hooks 2', and the The connection member 21a attached to the upper frame 21 is connected from the top to the work machine side harness connector. 27 is fixedly installed.

[0021] In addition, a top link bracket 3' is provided at the front of the upper hook 2'. Ru. Magnets 26a and 27a are provided in the center of both harness connectors, and the periphery of the magnets is Harness terminals 26b and 27b are attached to the enclosure to connect both harness connectors. It is possible. That is, the connecting member 21a attached to the upper frame 21 of the working machine At the same time, attach and detach both harnesses to upper hook 2' of auto hitch H. connectors are automatically connected and disconnected.

[0022] Finally, the harness connector according to claim 3 will be explained with reference to FIGS. 8 and 9. Ru. FIG. 8 shows a harness connector according to claim 3 in the lower link of an autohitch H. Figure 9 is a diagram showing the process of installation on the lower link bracket 22 of the working machine. It is a side view of the state after it was made to match. Groove of lower link guide 4 of auto hitch H Fix the tractor side coupler 28 slightly above D, and attach it to the lower link bracket of the work equipment. The work equipment side coupler 2 is connected to the tractor side coupler 28 on the toe 22. Fix 9. Both couplers are attached to a harness that extends from the couplers when coupled. The direction is a tangent to a circle centered on the connection point U between the upper hook 2 and the upper connection member 21a Fix it so that it forms. With this configuration, the work equipment can be automatically hit. Both couplers are automatically attached and detached at the same time as they are attached to and detached from the chain H.

[0023]

[Effect of the idea]

Since the present invention is constructed as described above, it has the following effects. request By configuring as in Request 1, there is a lever for attaching and detaching the work equipment to the auto hitch H. Since the operation of bar 5 also functions to attach and detach the harness connector at the same time, it is separate from the attachment and detachment of the work equipment. This saves the trouble of attaching and detaching the harness connector.

[0024] Moreover, by configuring as in claims 2 and 3, the harness connector can be attached and detached. This is done automatically at the same time as the work equipment is attached to and detached from the auto hitch H.

[0025] As described above, with the configuration as claimed in claims 1, 2, and 3, the harness connector can be attached. It is very easy to remove and remove, and it is also possible to forget to attach the harness connector when attaching or detaching the work equipment. This prevents damage to the harness and malfunction of the work equipment caused by forgetting to remove it. Ru.

[Brief explanation of drawings]

FIG. 1 is a side view of a rotary tiller R, which is a working machine, attached to the rear of a tractor T.

FIG. 2 is a side view of the rotary tiller R according to the embodiment of claim 1, which is attached to the rear of a tractor T.

FIG. 3 is a front elevational view of the hitch frame 1 according to the first aspect of the invention.

FIG. 4 is a side view of the lever 5 according to the configuration of claim 1.

FIG. 5 is a rear front view of the hitch frame 1 according to the first aspect of the invention.

FIG. 6 is a perspective view of the harness connector according to claim 1 attached to the autohitch H and the upper arm 21;

7 is a perspective view of the harness connector according to claim 2 attached to the autohitch H and the upper arm 21. FIG.

FIG. 8 is a side view of the harness connector according to claim 3 in the middle of being attached to the lower link guide 4 of the auto hitch H and the lower link blanket 22 of the working machine.

FIG. 9 is a side view of the state after being combined from the state of FIG. 8;

[Explanation of symbols]

H auto hitch 1 hitch frame 2,2’ Upper frame 3 Top link guide 4 Lower link guide 5 Lever 9 Lower Link 21 Upper frame 22 Lower link bracket 23 Link 23a Contact terminal 24 Rod 25 Contact terminal 26 Tractor side harness connector 27 Work machine side harness connector 28 Tractor side coupler 29 Work machine side coupler

Claims (3)

[Scope of utility model registration request] Claim 1: A tractor that electronically controls a working machine connected to the rear of the tractor, which is equipped with an auto hitch H having hooks attached to three points at the top center and left and right bottom ends of an inverted U-shaped hitch frame 1. In the attached one, a link 23 provided with a contact terminal 23a, which is a harness connector, is attached to the upper hook 2 of the auto hitch H, and the link 23 is connected to the lever 5 with a rod 24, while the work machine A simple detachable connector for a tractor, characterized in that a contact terminal 25 is fixed to a side upper arm 21, and both contact terminals 23a and 25 are connectable. Claim 2: A tractor that electronically controls a working machine connected to the rear, and is equipped with an auto hitch H in which hook parts are attached to three points at the top center and left and right bottom ends of an inverted U-shaped hitch frame 1. When installed, the tractor side harness connector 26 is fixed between the upper hooks 2' of the auto hitch H, and the work machine side harness connector 27 is fixed between the tractor side of the upper arm 21 on the work machine side. A simple detachable connector for a tractor, characterized in that it is provided in the center of an upper coupling member 21a. 3. A tractor that electronically controls a working machine connected to the rear, and equipped with an auto hitch H having hook parts attached to three points at the top center and left and right bottom ends of an inverted U-shaped hitch frame 1. In the attached one, the tractor-side coupler 28, which is a harness connector, is fixed near the lower hook 9 of the lower link guide 4 of the auto hitch H, and the tractor-side coupler 28, which is a harness connector, is fixed near the lower coupling member 22a of the lower link bracket 22 on the work machine side. A simple method for attaching and detaching a tractor, characterized in that a side coupler 29 is fixed, and the fixing direction of both couplers is made to match the tangential direction of a circle centered on the coupling point U between the upper hook 2 and the upper coupling member 21a. type connector.